Film-cartridge



A. w. McCURDY.

FILM CARTRIDGE.

APPLICATION FILED APR. 26, 1917. RENEWED NOV. 18,1919.

1,347,109, Patented July 20,1920

a m N CD N UNITED STATES" PATENT OFFICE.

FILM-CARTRIDGE.

Application filed April 26, 1917, Serial No. 164,693.

tridgeincludinga stencil strip. for exposure titlingor ic lent fi catlon. Such stenc1l strips usually impress their legends upon the film by a photographic action, butmechanical impression has been proposed and practised, and my invention is available withiany type of stencil, strip placed be tween the filmand the protecting strip regardlessof its characteristic mode of action. In a ou-pending application, Serial No.

92,0() -,ffilec l April 18,. 1916 I describe and claim a filmflcartridge having extension strips at the forward end or at 'both ends. The filurlof the present application is an improvement upon that, the special features of V improvement being in the connecting means used-between strips and the mode of mounting the 'stencilstrip. I

P eferred embodiments of the invention are ill-ustratedin the accompanying drawgslinv o fFi'gure 1 is a view of the cartridge with the'forward portion of the protecting strip and the forward extension strip unrolled to expose the film strip. Parts "are broken away to show the stencil and protecting strips;

Fig. 2 is a section on the line 22 of l 'si o ,7

ig.3 is a somewhat similar view of a modified construction, the rear ends of this film. and protecting strip and the rear extension strip bein shown in this figure; F ig. 4 is a section on the 'line 4:4 of Fig. 3; and v I r Fig.6 is a longitudinal section of the complete film, protecting ZLIICl GXtGIlSlOIl strips, constructed and assembled in the manner shown "in Figs. 1 and 2.- Parts are broken out to reduce the, length and the view is largely di'agrammatlc to llustrate the freedom of thestencil strip andthe reversed lap of film and extension strip at the ,t wo ends. r i

. Referring first to F1gs. 1 2 and 5, 6 represents the backing strip, commonly of Specification of Letters Patent.

' Patented July 20,1920. Renewed November 13, 1919. Serial No. 338,807.

translucent red paper. This strip is of the same width as the film strip 7 and is folded back nearits ends at 8 and 9 formingextension strips 10 and 11 (Fig. 5'). I The mater al is tapered at the fold, as shown at 12 (Fig. 1) and the extremity of. each folded back portion overlaps and is fastened to the corresponding end of the film strip 7 by means of af pointed headless pin 13 quilted through from the back as clearly shown in Figs. 1 and 2. Thisisthe preferred means of attachment and it is rendered feasible by the fact that in. a film constructed with extension strips the pin is so covered by the backing strip as never to touch the face of the sensitized film. Other means of attachment may be used. c

In order to insure smooth passage over the small guide rollers of a camera the directions of overlap of the ends ofthe extension strips and film are reversed at the two ends of the cartridge. At the forward end of the roll (with referenceto the direction of'movement the film through the camera) the extension strip 10 overlies the face'of the film. (See Figs. 1 and 2.) At the rear end, the fil i trip overlies the extension strip 11. Thesetwo' jointsare correctly differentiated in Fig. 5 in which "the forward end is to the right as indicated by the arrow. The distinction is also presented between Fig. 1 which represents a front end and Fig. 3'which represents a rear end (not, however, of the samefilm). 4

The purposeof the extension strips 10 and 11 is to allow a creep of the film over the protecting strip to occur, and to extend past the end of the film so that there will be no bunching in the camera or developing machine. To secure this result the extensionstrips need not extend clear to the end of the protecting strip but may stop short ofthe end of the protecting strip as indicated in Figs. 3 and 4. Here a pin 14, similar to pin 18, is used. of the film this pin 14 should be so near the end of the protecting strip as to be beyond all the guide rolls when the film is initially threaded into the camera. If this can- .not be done the pin is omitted and recourse is had to adhesive connection as otherwise there is danger of catching and tearing of the end of the extensionstrip.

\Vith any of thearrangements above described I may make use of a stencil stripl5 which preferably is of the same width as the At the forward end end of the protecting strip being exposed at the periphery of the roll to serve in threading up a camera in'daylight.

A film prepared as above has various advantages. it rolls-smoothly in a camera and when wound into'th'e apron of a developing tank accommodates itself to the reversed direction of fiexure. More important; however; is economy in manufacture: The film does not require to'be rolled and then;re.- rolled in the reverse direction; as is the pres-5 ent practi'ce. This saves labor and possible injury tofthe film. There is no use of adhesives or moisture on or near the film. The

stencil strip is easily put'into position and will roll smoothly under all conditions. In

case of hand development it can be removed with the least possible difiicultyl. and handling, an important point when it is considered that the stencil strip is a'waxy carbon tissue in the present commercial type of autographic cartridge. I

The .pin fastening is a. valuable feature because it bringsno moistureinto the cartridgeas to adhesives and does not cause a' stiff place in the strips at the points of unoture as do the gummed stickers now in 'common use. The pin also gives a slight lateral flexibility to the connected strips Which is favorable to smooth entrance between the spool fianges. The pin may be of metal or of any other-suitable material.

Having thus described my invention what I claim is l. Afilm cartridge comprising in combination a strip of film; a protecting strip longer than said 'film strip; an extension strip of substantial length connected tosaid protecting strip, a fastener connecting one end of said film strip'to said extension strip I and a.- spool on which said film and strips are wound togethera 2. A film cartridge comprising "in combimetals strip of film; a protecting strip longer than said film strip; an extension strip fof substantial length connected to said protecting strip; a pin quilted through the nation a strip of film; a protecting strip longer than said film strip; an extension end offsaid film strip and said extension strip to connect the two together; "and a spool on which 1 said film and strips are.

wound together.

3. Ajfilm cartridge comprising in combistrip. of substantial length connected to said protecting'strip; a pin connecting one end of said film stripfto said extension strip; a. stencil strip placedv between said film strip.

and said protecting strip and retained solely a l i V. i by its frictional engagement therewith; and

a spool on which said filmjand strips are wound together.-

4. A fihn cartridge comprising incombinationa strip of film; a protecting strip longer than said film strip; an extension strip of substantial length connected to said arotectin stri a fastener uilted throu h b 7 I C7 the end ofsaid film stripi and said extension.

strip to connect the two together; a stencil strip placed between said film. strip and said protectings'trip and retained solely by its frictional engagement therewith; and a spool on whichfsaid and strips are wound together.

' 5. A film cartridge comprisingfin combi! nation a strip of film; a protecting strip longer than saidfilmstrip and projecting beyond both endsthe're'of; extension strips of substantial length connected to aid protectingstrip; pins connecting theiends' of said film? strip. to corresponding extension"? strips; and a spool on whichsaidfihn'andf strips arew oun'd togethenf Y 6. A film cartridge'comprisingin combination a strip of film; a protecting'st'rip longer than said film strip. and projecting beyond both ends thereof; extension strips ends. -of said film strip and corresponding of substantial length connected to said "pro- Y tecting strip; fasteners quilted'throngh the extension strips to connect'thefends' of the; film ,"stripz to the extension strips; and a spool on which 'said"film and "strips are wound together. a a all. j 7. .A film cartridge'camprisiiig' in combt nation a strip offilm; a" protecting strip.

longer, than said film; strip and projecting beyond both. ends thereof; extension strips of substantial length connected-tosaid protecting strip; pins connecting the endsof said film strip to. corresponding extension strips; a stencil strippla'ced between said film strip. and said protecting strip andreta'in'ed solely itsfrictional engagement. therewith; and a spool on which said film.

and strips are wound together.

8. A film cartridge comprising in combination a strip of film; a protecting strip longer than said film strip .and projecting beyond both ends thereof; extension strips of substantial length connected. to said protecting strip-;.fasteners quilted through the ends of said film strip and corresponding;

xtension strips toconnectflthe endsof the filmstrip to 'the ejxtensionstrips; a stencil strip placed between said film strip and a said protecting strip and retained solely by its frictional engagement'therewith; and'aj and strips are.

spool onwhich said wound together."

9 A film eartridge comprisingin-combi nation a strip of film; a protecting strip longer than said film strip and projecting beyond both ends thereof; extension strips iob iit

of substantial length connected to said protecting strip; the rear end of the forward extension strip overlapping the face of the forward end of the film and the rear end of the film overlapping the face of the forward end of the rear extension strip; fasteners extending transversely to said strips and quilted throu h the overlapping ends there of; and a spool upon "which said strips are Wound together. 7

In testimony whereof I have signed my name to this specification.

ARTHUR W. MOOURD Y. 

